| 1 | /*- |
| 2 | * SPDX-License-Identifier: BSD-2-Clause |
| 3 | * |
| 4 | * Copyright (C) 2005 TAKAHASHI Yoshihiro. All rights reserved. |
| 5 | * |
| 6 | * Redistribution and use in source and binary forms, with or without |
| 7 | * modification, are permitted provided that the following conditions |
| 8 | * are met: |
| 9 | * 1. Redistributions of source code must retain the above copyright |
| 10 | * notice, this list of conditions and the following disclaimer. |
| 11 | * 2. Redistributions in binary form must reproduce the above copyright |
| 12 | * notice, this list of conditions and the following disclaimer in the |
| 13 | * documentation and/or other materials provided with the distribution. |
| 14 | * |
| 15 | * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
| 16 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 17 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 18 | * ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE |
| 19 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 20 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 21 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 22 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 23 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 24 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 25 | * SUCH DAMAGE. |
| 26 | */ |
| 27 | |
| 28 | #ifndef _MACHINE_PPIREG_H_ |
| 29 | #define _MACHINE_PPIREG_H_ |
| 30 | |
| 31 | #ifdef _KERNEL |
| 32 | |
| 33 | #define IO_PPI 0x61 /* Programmable Peripheral Interface */ |
| 34 | |
| 35 | /* |
| 36 | * PPI speaker control values |
| 37 | */ |
| 38 | |
| 39 | #define PIT_ENABLETMR2 0x01 /* Enable timer/counter 2 */ |
| 40 | #define PIT_SPKRDATA 0x02 /* Direct to speaker */ |
| 41 | |
| 42 | #define PIT_SPKR (PIT_ENABLETMR2 | PIT_SPKRDATA) |
| 43 | |
| 44 | #define ppi_spkr_on() outb(IO_PPI, inb(IO_PPI) | PIT_SPKR) |
| 45 | #define ppi_spkr_off() outb(IO_PPI, inb(IO_PPI) & ~PIT_SPKR) |
| 46 | |
| 47 | #endif /* _KERNEL */ |
| 48 | |
| 49 | #endif /* _MACHINE_PPIREG_H_ */ |